If your YouTube channel is linked to a Google+ Pagerather than a Google+ Profile you won't be able to delete your Google+ Page while your YouTube channel is linked. That's a good thing, because Google+ Pages can't be restored as easily as Google+ Profiles. But that does mean you are stuck with your Google+ Page if your YouTube channel cannot be disconnected from it and you don't want to delete your channel.

If your Google+ Profile was suspended or terminated for violating the Google+ Profile name policy or user content and conduct policy, you must fix any issues with your Profile and then appeal to have it restored. Bottom line: if your YouTube channel is linked to Google+, you not only have to be mindful of the YouTube Community Guidelines, but Google+ policies as well.